Lineset Duct Wall Flange;Applicable Standard UL-94V-0;Material PVC;Size 4-1/2";Used On Lineset Ducting System;Includes (2) #6 x 3/4" Stainless Steel Screw;Overall Dimension 6-1/2" Length x 7-3/4" Width x 2-5/8" Height;Color Gray;Temperature Rating 0 to 180 Deg F;Packaging Quantity 6 per Carton;Warranty 1 Year Limited